A Novel Electric Field Coupling Mechanism With Dynamic Tolerance for Rail WPT Application

A common dynamic energy transfer method in electric field coupled wireless power transfer technology is the dynamic track coupler. This article designs a dynamic track type coupler, which is more suitable for track type transportation equipment with relatively fixed structures. Compared with traditional long rail couplers, it increases coupling capacitance and improves the stability of dynamic energy transmission. By designing couplers, the ability to shield leakage electric fields has been improved while significantly saving materials. A bidirectional LC topology CPT system has been designed, and when the transmission power is greater than
$1{\text{\ kW}}$
, the transmission efficiency can reach
$80{{\% }}$
, improving the power density of the transmission structure. In addition, when offset occurs, transmission efficiency and power can fluctuate within a small range.